Methods of decoupled signaling for CSI measurement and CSI computation / reporting

Abstract

In an embodiment, a method performed by a wireless device for performing Channel State Information (CSI) measurement and reporting includes receiving a configuration of one or more periodic Non-Zero Power (NZP) CSI Reference Signals (CSI-RS) resources. The method also includes receiving a first signal that indicates to start measurement on a subset of the NZP CSI- RS resources, wherein the first signal comprises information on an identity of a subset of the NZP CSI-RS resources, a number of CSI-RS occasions of the NZP CSI-RS resources, an indication that averaging across a number of CSI-RS occasions is enabled or disabled, and a number of CSI-RS ports to measure. The method also includes performing channel measurements, receiving a second signal that indicates a time limit for computing CSI reports, and information about uplink resources. The method also includes computing the CSI reports, and reporting the CSI reports to the network.

Description

METHODS OF DECOUPLED SIGNALING FOR CSI MEASUREMENT AND CSI COMPUTATION / REPORTINGRELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Patent Application No.63 / 743,091, filed January 8, 2025, the disclosure of which is hereby incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to methods for performing and facilitating Channel State Information (CSI) measurement and reporting, and more particularly to decoupled signaling for CSI measurement and CSI computation and reporting.BACKGROUND

[0003] Multi-antenna techniques can significantly increase the data rates and reliability of a wireless communication system. The performance in particular is improved if both the transmitter and the receiver are equipped with multiple antennas, which results in a multipleinput multiple-output (MIMO) communication channel. Such systems and / or related techniques are commonly referred to as MIMO.

[0004] A core component of the fifth Generation (5G) wireless network or New Radio (NR) is the support of MIMO antenna deployments and MIMO related techniques such as spatial multiplexing. Spatial multiplexing can be used to increase data rates in favorable channel conditions. Figure 1 shows an example of spatial multiplexing. An information carrying symbol vector s is multiplied by an NTX r precoding matrix or precoder W, which serves to distribute the transmit energy in a subspace of the NTdimensional vector space. The precoding matrix is typically selected from a codebook of possible precoding matrices, and typically indicated by means of a precoding matrix indicator (PMI), which specifies a unique precoding matrix in the codebook for a given number of symbol streams. The r symbols in s each correspond to a MIMO layer and r is referred to as the transmission rank, which equals to the number of columns of the precoder W. In this way, spatial multiplexing is achieved since multiple symbols can be transmitted simultaneously over the same time / frequency resource element (RE). The number of symbols r is typically adapted to suit the current channel properties.

[0005] NR uses Orthogonal Frequency Division Multiplexing (OFDM) in downlink. The received NRX lvector ynat a User Equipment (UE) on a certain RE can be expressed as:

[0006] where enis a receiver noise / interference vector. The precoder W can be constant over frequency (i.e., wideband), or frequency selective (i.e., per subband).

[0007] The precoder W is chosen to match the characteristics of the NRX NTMIMO channel matrix Hn, resulting in so-called channel dependent precoding. This is also commonly referred to as closed-loop precoding.

[0008] In closed-loop precoding, the UE feeds back recommendations on a suitable precoder to the gNB in the form of a PMI based on downlink channel measurements. For that purpose, the UE is configured with a channel state information (CSI) report configuration including CSI reference signals (CSI-RS) for channel measurements and a codebook of candidate precoders. In addition to precoders, the feedback may also include a rank indicator (RI) and one or two channel quality indicators (CQIs). RI, PMI and CQI are part of a CSI feedback. In NR, CSI feedback can be either wideband, where one CSI is reported for the entire channel bandwidth, or frequency-selective, where one CSI is reported for each subband, which is defined as a number of contiguous physical resource blocks (PRBs) ranging between 4-32 PRBs depending on the band width part (BWP) size.

[0009] Given the CSI feedback from the UE, the gNB determines the transmission parameters it wishes to use to transmit to the UE, including the precoding matrix, transmission rank, and modulation and coding scheme (MCS).2D Antenna Arrays

[0010] Two-dimensional antenna arrays are widely used and such antenna arrays can be described by a number of antenna ports, Nr, in a first dimension (e.g., the horizontal dimension), a number of antenna ports, N2, in the second dimension perpendicular to the first dimension (e.g., the vertical dimension), and a number of polarizations Np. The total number of antenna ports is thus N = N1N2Np. The concept of an antenna port is non-limiting in the sense that it can refer to any virtualization (e.g., linear mapping) to the physical antenna elements. For example, pairs of physical antenna elements could be fed the same signal, and hence share the same virtualized antenna port.

[0011] An example of a 4 X 4 (i.e., N X N2l) array with dual-polarized antenna elements (i.e., Np= 2) is illustrated below in Figure 2.

[0012] Precoding may be interpreted as multiplying the signal to be transmitted by a set of beamforming weights on the antenna ports prior to transmission. A typical approach is to tailorthe precoder to the antenna form factor, i.e. taking into account NltN2and Npwhen designing the precoder codebook.CSI Reference Signals (CSI-RS)

[0013] For CSI measurement and feedback, CSI-RS are defined. A CSI-RS is transmitted on an antenna port at the gNB and is used by a UE to measure a downlink channel between the antenna port and each of the UE’s receive antenna ports. The transmit antenna ports are also referred to as CSI-RS ports. The supported number of CSI-RS ports in NR are {1,2,4,8,12,16,24,32}. By measuring the received CSI-RS, a UE can estimate the channel that the CSI-RS is traversing, including the radio propagation channel and antenna gains. The CSI-RS for the above purpose is also referred to as Non-Zero Power (NZP) CSI-RS.

[0014] CSI-RS can be configured to be transmitted in certain REs in a slot and certain slots. Figure 3 shows an example of CSI-RS REs for 12 antenna ports, where IRE per RB per port is shown.

[0015] In addition, interference measurement resource (IMR) is also defined in NR for a UE to measure interference. An IMR resource contains 4 REs, either 4 adjacent RE in frequency in the same OFDM symbol or 2 by 2 adjacent REs in both time and frequency in a slot. By measuring both the channel based on NZP CSI-RS and the interference based on an IMR, a UE can estimate the effective channel and noise plus interference to determine the CSI. Furthermore, a UE in NR may be configured to measure interference based on one or multiple NZP CSI-RS resource.CSI Framework in NR

[0016] In NR, a UE can be configured with multiple CSI reporting settings and multiple CSI-RS resource settings. Each resource setting can contain multiple resource sets, and each resource set can contain up to 8 CSI-RS resources. For each CSI reporting setting, a UE feeds back a CSI report.Each CSI reporting setting contains at least the following information:• A CSI-RS resource setting for channel measurement• An IMR resource set for interference measurement• Optionally, a CSI-RS resource set for interference measurement• Time-domain behavior, i.e. periodic, semi-persistent, or aperiodic reporting• Frequency granularity, i.e. wideband or subband• CSI parameters to be reported such as RI, PMI, CQI, and CSI-RS resource indicator (CRI) in case of multiple CSI-RS resources in a resource set• Codebook types, i.e. type I or II, and codebook subset restriction• Measurement restriction• Subband size. One out of two possible subband sizes is indicated, the value range depends on the bandwidth of the BWP. One CQI / PMI (if configured for subband reporting) is fed back per subband).SUMMARY

[0017] In an embodiment, a method performed by a wireless device for performing Channel State Information (CSI) measurement and reporting is provided. The method includes one or more of receiving, from a network node, a configuration of one or more periodic NonZero Power (NZP), CSI Reference Signals (CSI-RS) resources, and receiving, from the network node, a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure; an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources. The method also includes performing channel measurements according to the first signal, receiving, from the network node, a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal, computing the one or more CSI reports in response to receiving the second signal based on the channel measurements, and reporting the one or more CSI reports to the network node.

[0018] In an embodiment, the computation of the one or more CSI reports commences when the second signal is received.

[0019] In an embodiment, the second signal additionally comprises information about uplink (UL) resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities.

[0020] In an embodiment, the method also includes receiving a third signal that comprises information about uplink resources for carrying the one or more CSI reports comprising one ormore CSI reporting quantities, wherein the third signal is different than the first signal and the second signal.

[0021] In an embodiment, the first signal is a CSI measurement start trigger that is at least one of a downlink related downlink control information (DCI) or a downlink Medium Access Control (MAC) Control Element (CE).

[0022] In an embodiment, the second signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

[0023] In an embodiment, the second signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

[0024] In an embodiment, the second signal is a CSI reporting trigger.

[0025] In an embodiment, the third signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

[0026] In an embodiment, the third signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

[0027] In an embodiment, the third signal is a CSI reporting trigger.

[0028] In an embodiment, a wireless device is provided for performing CSI measurement and reporting. The wireless device includes processing circuitry and a memory where the processing circuitry is configured to perform one or more of receiving, from a network node, a configuration of one or more periodic NZP CSI-RS resources, and receiving, from the network node, a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSLRS resources, wherein the first signal comprises information on one or more of the following an identity of the subset of the one or more periodic NZP CSLRS resources; a number of CSI-RS occasions of the one or more periodic NZP CSLRS resources to measure; an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources. The processing circuity can also perform channel measurements according to the first signal, receiving, from the network node, a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal, compute the one or more CSI reports in response to receiving the second signal based on the channel measurements, and report the one or more CSI reports to the network node. The wireless device can also perform any of the embodiments described above.

[0029] In an embodiment, a method performed by a network node for facilitating CSI measurement and reporting is provided. The method includes one or more of providing to a wireless device a configuration of one or more periodic NZP CSI-RS resources and providing, to the wireless device, a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following: an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure; an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources. The method also includes providing, to the wireless device, a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal and receiving, the one or more CSI reports from the wireless device.

[0030] In an embodiment, the computation of the one or more CSI reports commences when the second signal is received.

[0031] In an embodiment, the second signal additionally comprises information about uplink resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities.

[0032] In an embodiment, the method includes providing a third signal that comprises information about UL resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities, wherein the third signal is different than the first signal and the second signal.

[0033] In an embodiment, the first signal is a CSI measurement start trigger that is at least one of a downlink related DCI or a downlink MAC CE.

[0034] In an embodiment, the second signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

[0035] In an embodiment, the second signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

[0036] In an embodiment, the second signal is a CSI reporting trigger.

[0037] In an embodiment, the third signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

[0038] In an embodiment, the third signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

[0039] In an embodiment, the third signal is a CSI reporting trigger.

[0040] In an embodiment, a network node is provided for facilitating CSI measurement and reporting. The network nodes includes processing circuitry and a memory, where the processing circuitry is configured to perform one or more of providing to a wireless device a configuration of one or more periodic NZP CSI-RS resources and providing, to the wireless device, a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following: an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure; an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources. The processing circuitry can also perform providing, to the wireless device, a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal and receiving, the one or more CSI reports from the wireless device. In an embodiment, the network node can perform any of the embodiments described above.BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawing figures incorporated in and forming a part of this specification illustrate several aspects of the disclosure, and together with the description serve to explain the principles of the disclosure.

[0042] Figure 1 shows an example of spatial multiplexing according to one or more embodiments of the present disclosure;

[0043] Figure 2 shows an example of a multi-antenna array with dual-polarized antenna elements according to one or more embodiments of the present disclosure;

[0044] Figure 3 shows an example of Channel State Information (CSI) Reference Signals (CSI-RS) Resource Elements (REs) for 12 antenna ports according to one or more embodiments of the present disclosure;

[0045] Figure 4 shows an exemplary message sequence chart of a method for performing and facilitating CSI measurement and reporting according to one or more embodiments of the present disclosure;

[0046] Figure 5 shows an example of CSI measurement start trigger indicating information on the number of CSI-RS occasions of one or more periodic NZP CSI-RS resources the UE shall measure according to one or more embodiments of the present disclosure;

[0047] Figure 6 shows an example of a communication system in accordance with some embodiments of the present disclosure;

[0048] Figure 7 is another example of a communication system according to some embodiments of the present disclosure;

[0049] Figure 8 shows a wireless device, which may be configured to operate in the communication system of Figure 6 or in the communication system of Figure 7;

[0050] Figure 9 shows a network node in accordance with some embodiments of the present disclosure; and

[0051] Figure 10 is a block diagram illustrating a virtualization environment in which functions implemented by some embodiments of the present disclosure may be virtualized.DETAIEED DESCRIPTION

[0052] The embodiments set forth below represent information to enable those skilled in the art to practice the embodiments and illustrate the best mode of practicing the embodiments. Upon reading the following description in light of the accompanying drawing figures, those skilled in the art will understand the concepts of the disclosure and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure.

[0053] Some of the embodiments contemplated herein will now be described more fully with reference to the accompanying drawings. Embodiments are provided by way of example to convey the scope of the subject matter to those skilled in the art.

[0054] There currently exist certain challenge(s). When a periodic Non-Zero Power (NZP) Channel State Information (CSI) Reference Signal (CSI-RS) resource is configured for channel measurement and the CSI reporting is triggered aperiodically, currently the User equipment (UE) does not know when the CSI reporting trigger will arrive from the network node. Hence, the UE has to measure all the CSI-RS occasions of the periodic NZP CSI-RS resource even when a trigger for CSI reporting may not arrive from the network. Such measurements can unnecessarily increase the CSI measurement burden at the UE with the undesirable effect of increased battery consumption. For that reason, there is a limited number of periodic NZP CSI-RS resources that can be configured for a UE in New Radio (NR). Hence, for periodic NZPCSI-RS resources, how to reduce the measurement burden at the UE when the CSI report is aperiodically triggered is an open problem to be solved.

[0055] Certain aspects of the disclosure and their embodiments may provide solutions to these or other challenges. Various embodiments provide for methods for performing and facilitating measurement and reporting, and more particularly to decoupled signaling for CSI measurement and CSI computation and reporting. In particular, the channel measurement a periodic NZP CSI-RS can be decoupled from CSI computation / reporting by introducing a measurement start trigger from the network to a User Equipment (UE) to indicate to the UE when to start measuring the periodic NZP CSI-RS. the CSI measurement start trigger from the NW to the UE can indicate measurement related information to the UE wherein the measurement related information includes one or more of:• Identity of one or more periodic NZP CSI-RS resources• a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure• whether averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled• a number of CSI-RS ports to measure in the one or more periodic NZP CSI-RS resources.

[0056] Furthermore, a second signal transmitted from the network node to the UE, which is different from the CSI measurement start trigger, is used to initiate at least CSI computation and may also indicate CSI reporting from the UE to the NW.

[0057] Certain embodiments may provide one or more of the following technical advantage(s). With the proposed techniques described here, the UE only has to start measuring a subset of configured periodic NZP CSI-RS resources after receiving a CSI measurement start trigger. Hence, the UE does not have to measure a periodic NZP CSI-RS resource before receiving associated CSI measurement start trigger, which helps reduce the CSI measurement burden at the UE and also allows the network to configure multiple periodic CSI-RS resources each covering a different severing area, for example, and dynamically requests the UE to measure certain periodic CSI-RS resource as the UE moves.

[0058] Furthermore, as the CSI computation / reporting is triggered by a signal different from the CSI measurement start trigger, the channel measurement and CSI computation / reporting parts are decoupled. Hence, the UE can perform measurement once the CSI measurement start trigger is received and only start CSI computation and report the computed CSI after receiving the second signal which can also help save CSI computational burden (as opposed to computing the CSI every CSI occasion of the periodic NZP CSI-RS resource).

[0059] It also provides the network node with flexibility since there is more control over when the UE is busy and when the UE is not busy, and the UE can be scheduled with other tasks in the no-busy time periods. This is not possible in current systems since the UE is assumed by the NW as always busy (even if not busy) when periodic CSI-RS configured.

[0060] Figure 4 shows an exemplary message sequence chart of a method for performing and facilitating CSI measurement and reporting.

[0061] The method can begin at step 402, where the wireless device 800 receives a configuration of one or more periodic NZP CSI-RS resources.

[0062] At step 404, the method includes receiving, by the wireless device 800 from the network node 900, a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, where the first signal comprises information on one or more of the following:• an identity of the subset of the one or more periodic NZP CSI-RS resources;• a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure;• an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and• a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI- RS resources;

[0063] In an embodiment, the first signal is a CSI measurement start trigger that is at least one of a downlink related downlink control information (DCI) or a downlink Medium Access Control (MAC) Control Element MAC-CE.

[0064] At step 406, the wireless device performs channel measurements according to the first signal, and at step 408, which can happen before, concurrently, or after step 406, the wireless device 800 receives, a second signal that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal, where the second signal is different than the first signal. In an embodiment, the second signal additionally comprises information about uplink resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities. In an embodiment, the second signal is an uplink related DCI providing uplink resources for carrying the one or more CSI reports. In an embodiment, the second signal is a MAC CE that provides uplink resources for carrying the one or more CSI reports. In an embodiment, the second signal is a CSI reporting trigger.

[0065] At optional step 410, the method includes receiving by the wireless device 800 a third signal that comprises information about uplink resources for carrying the one or more CSIreports comprising one or more CSI reporting quantities, wherein the third signal is different than the first signal and the second signal. In an embodiment, the third signal is an uplink Physical Uplink Shared Channel (PUSCH) grant.

[0066] At step 412, the wireless device 800 computes the one or more CSI reports in response to receiving the second signal based on the channel measurements, and at step 414, the wireless device 800 reports to the network node 900 the one or more CSI reports. In an embodiment, the one or more CSI reports are reported using UL resources provided in the second signal or the third signal.

[0067] In an embodiment, the computation of the one or more CSI reports commences when the second signal is received.

[0068] In one embodiment, the CSI measurement start trigger (the first trigger) only initiates measurement of the one or more periodic NZP CSI-RSs. That is, once the UE receives the CSI measurement start trigger from the network node, the UE starts measurement of the one or more periodic NZP CSI-RSs, where the measurement is a channel measurement. In this embodiment, there is no request from the NW that the UE shall calculate and report the CSI associated with said first trigger measurement. This may or may not trigger a CSI report for this measurement.

[0069] The UE then receives, from the NW, a second trigger (the CSI report trigger) which contains a request to compute CSI associated with the measurement obtained by the first trigger.

[0070] A possible and preferred UE implementation that would save battery life and computations in the UE is that the UE does not start computation of the CSI reporting quantities until it receives the CSI report trigger. Hence, when the UE receives the CSI report trigger, the UE starts computing the CSI reporting quantities to be reported and the UE subsequently reports the computed CSI reporting quantities which are part of the CSI report. Note that whether the UE starts to compute the CSI report before or after the second trigger is a UE implementation choice. However, the NW assumes that the UE is not performing any CSI calculations before it has received the second trigger, and therefore, the NW may schedule other tasks for the UE as it is assumed that the UE does not have any other ongoing tasks, or that it has free computation capacity to perform another task. When the UE receives the second trigger, on the other hand, the UE is assumed to be active to compute the CSI report.

[0071] Therefore, in essence, the second trigger from the NW indicates to the UE that it should have a CSI report ready within a certain time, given by standard specifications or indicated by the network (e.g. in the trigger message). When the CSI report is ready, it can be transmitted by the UE to the NW using an uplink channel.

[0072] The scheduling information and UL grant needed to transmit the CSI report (UL PUSCH grant) may be part of the second trigger message from the NW to the UE, or alternatively indicated by a third trigger message (UL grant) from the NW to the UE.

[0073] In an example, the first trigger triggers an CSI-RS measurement, and based on this measurement, the network can choose to trigger, using the second trigger, either a CSI calculation and report of a first reporting quantity or a second reporting quantity. The NW may also trigger the first quantity first and the second quantity thereafter in a time multiplexed manner, since after the first quantity has been calculated and reported, the UE has free computation resources and can be tasked to compute and report the second quantity. This procedure is not possible in current systems since it is assumed that UE computation resource is always occupied when periodic CSI-RS is used for measurements.

[0074] In another embodiment, the CSI measurement start trigger (first trigger) may include channel measurement related information, such as CSI report quantity, which are associated with a CSI report configuration for which the channel measurement is to be performed on the one or more periodic NZP CSI-RSs.

[0075] In a further embodiment, the one or more periodic NZP CSI-RS resources may be a subset of a plurality of configured periodic CSI-RS resources. In this case, the channel measurement related information includes information identifying the one or more periodic NZP CSI-RS resources.

[0076] In one embodiment, the channel measurement related information included as part of the CSI measurement start trigger (first trigger) may include the number of CSI-RS occasions of the one or more NZP CSI-RSs the UE shall measure. Figure 5 shows an example of CSI measurement start trigger indicating information on the number of CSI-RS occasions of one or more periodic NZP CSI-RS resources the UE shall measure. Although only one periodic NZP CSI-RS resource is shown in Figure 5, the example is non-limiting that the number of CSI-RS occasions indicated in the CSI measurement start trigger is also applicable when more than one periodic NZP CSI-RS resources are configured. In the example of Figure 5, the UE shall measure the first, second and third CSI-RS occasions of the configured periodic NZP CSI-RS that occur after the CSI measurement trigger. If X > 1 periodic NZP CSI-RS resources are configured as channel measurement resources, then 3 CSI-RS occasions that occur after the CSI measurement trigger for each of the X NZP CSI-RS resources shall be measured by the UE.

[0077] In another embodiment, the CSI measurement start trigger includes additional information on whether or not the UE shall average across the number of CSI-RS occasions to be measured by the UE as indicated by the CSI measurement start trigger. Using the example ofFigure 5, if averaging across the number of occasions to be measured by the UE is indicated as part of the additional information on CSI measurement start trigger, the UE performs averaging of the measurements performed on the first, the second, and the third CSI-RS occasions after CSI measurement trigger. When CSI report trigger 2 is received, UE will use the averaged measurement over the first, the second and the third CSI-RS occasions after CSI measurement trigger to compute the CSI reporting quantities and the computed CSI reporting quantities are reported as part of the CSI report reported in CSI report instance 2.

[0078] If averaging across the number of occasions to be measured by the UE is not indicated as part of the additional information on CSI measurement start trigger, then the UE does not perform averaging across the first, the second, and the third CSI-RS occasions after CSI measurement trigger. In this case, when CSI report trigger 2 is received (referring to example in Figure 5), UE will only use the channel measurement based on the third CSI-RS occasion after CSI measurement trigger to compute the CSI reporting quantities and the computed CSI reporting quantities are reported as part of the CSI report reported in CSI report instance 2

[0079] In another embodiment, the channel measurement related information included as part of the CSI measurement start trigger may include the number of ports to measure in the one or more periodic NZP CSI-RS resources in the CSI-RS occasion(s) that occur after the measurement start trigger. Assume that the one more periodic NZP CSI-RS resources are configured with Z CSI-RS ports. Then, the channel measurement related information included as part of the CSI measurement start trigger may indicate the UE to measure a subset Z' of CSI-RS ports in the one or more periodic NZP CSI-RS resources wherein Z' < Z. In response to this indication, the UE measures only the subset Z' of CSI-RS ports of the one or more periodic NZP CSI-RS resources in the CSI-RS occasion(s) that occur after the measurement start trigger.

[0080] In one embodiment, the CSI measurement start trigger is received via a DCI. In a detailed embodiment, the CSI measurement start trigger is a downlink related DCI received by the UE from the network node which triggers the UE to measure the periodic NZP CSI-RS resource and to compute a CSI reporting quantity. The downlink related DCI does not trigger the UE to report a CSI in this embodiment.

[0081] In another embodiment, the CSI measurement start trigger is received via a MAC CE from the network node to the UE. In a detailed embodiment, the CSI measurement start trigger is a downlink MAC CE received by the UE from the network node which triggers the UE to measure the periodic NZP CSI-RS resource and to compute a CSI reporting quantity. The downlink MAC CE does not trigger the UE to report a CSI in this embodiment.

[0082] Although CSI report trigger is shown in the above embodiments, the present disclosure is non-limiting in the sense that the CSI report may be triggered by a signal that provides an uplink grant (i.e., resources to carry the CSI report). Hence, the CSI report trigger in the above embodiments can be replaced by a signal that provides an uplink grant. In one embodiment, the signal that provides the uplink grant to carry the CSI report is an uplink related DCI that the UE receives from the network node. In another embodiment, the signal that provides the uplink grant to carry the CSI report is a downlink MAC CE.

[0083] In yet another embodiment, the CSI reports are carried by periodic resources that are configured via a configured grant which allows scheduling PUSCH resources to carry the CSI report without a DCI. In this embodiment the signal that provides the UL grant is an RRC message that schedules the PUSCH resources to carry the CSI report.

[0084] Figure 6 shows an example of a communication system 600 in accordance with some embodiments.

[0085] In the example, the communication system 600 includes a telecommunications network 602 that includes an access network 604, such as a radio access network (RAN), and a core network 606, which includes one or more core network nodes 608. The access network 604 includes one or more access network nodes or base stations of various types, access network nodes 610A and 610B are depicted (which may be collectively referred to as network nodes 610), or any other similar 3rdGeneration Partnership Project (3GPP) access nodes or non-3GPP access points (APs). Some embodiments of the access network 604 may include more than one access network technology. The network nodes 610 of access network 604 facilitate direct or indirect connection of wireless devices, also referred to as user equipments (UEs), such as by connecting UEs 612A, 612B, 612C, and 612D (one or more of which may be generally referred to as UEs 612) to the core network 606 over one or more wireless connections.

[0086] Moreover, a network node is not necessarily limited to an implementation in which a radio portion and a baseband portion are supplied and integrated by a single vendor. Thus, it will be understood that network nodes include disaggregated implementations or portions thereof. For example, in some embodiments, the telecommunications network 602 includes one or more Open-RAN (ORAN) network nodes. An ORAN network node is a network node in the telecommunications network 602 that supports an ORAN specification (e.g., a specification published by the O-RAN Alliance, or any similar organization) and may operate alone or together with other network nodes to implement one or more functionalities of any network node in the telecommunications network 602, including one or more access network nodes 610 and / or core network nodes 608.

[0087] Examples of an ORAN network node include an open radio unit (O-RU), an open distributed unit (O-DU), an open central unit (O-CU), including an O-CU control plane (O-CU-CP) or an O-CU user plane (O-CU-UP), a RAN intelligent controller (near-real time or non-real time) hosting software or software plug-ins, such as a near-real time control application (e.g., xApp) or a non-real time control application (e.g., rApp), or any combination thereof (the adjective “open” designating support of an ORAN specification). An ORAN network node may support a specification by, for example, supporting an interface defined by the ORAN specification, such as an Al, Fl, Wl, El, E2, X2, Xn interface, an open fronthaul user plane interface, or an open fronthaul management plane interface. Moreover, an ORAN network node may be a logical node in a physical node. Furthermore, an ORAN network node may be implemented in a virtualization environment (described further below) in which one or more network functions are virtualized. For example, the virtualization environment may include an O-Cloud computing platform orchestrated by a Service Management and Orchestration Framework via an 0-2 interface defined by the 0-RAN Alliance or comparable technologies.

[0088] The network nodes 610 facilitate direct or indirect connection of one or more UEs 612 to the core network 606 over one or more wireless connections. Example wireless communications over a wireless connection include transmitting and / or receiving wireless signals using electromagnetic waves, radio waves, infrared waves, and / or other types of signals suitable for conveying information without the use of wires, cables, or other material conductors. Moreover, in different embodiments, the communication system 600 may include any number of wired or wireless networks, network nodes, UEs, and / or any other components or systems that may facilitate or participate in the communication of data and / or signals whether via wired or wireless connections. The communication system 600 may include and / or interface with any type of communication, telecommunication, data, cellular, radio network, and / or other similar type of system.

[0089] The UEs 612 may be any of a wide variety of communication devices, including wireless devices arranged, configured, and / or operable to communicate wirelessly with the network nodes 610 and other communication devices. Similarly, the network nodes 608, 610 are arranged, capable, configured, and / or operable to communicate directly or indirectly (e.g., via other devices of telecommunications network 602) with the UEs 612 and / or with other network nodes or equipment in the telecommunications network 602 to enable and / or provide network access, such as wireless network access, and / or to perform other functions, such as administration in the telecommunications network 602. More specifically, UEs 612 may send messages, data, and / or other signals to network nodes 608, 610 or other elements of thetelecommunications network 602 by transmitting such signals to the relevant device directly without the signals passing through any intervening devices or by transmitting such signals to the relevant device indirectly through an intervening device (or multiple intervening devices) that then transmit the signal to the relevant device. Similarly, network nodes 608, 610 may send messages, data, and other signals to UEs 6122, other network nodes 608, 610, and other devices in telecommunications network 602 directly or indirectly. As one specific example, a core network node 108 may transmit a particular message to a UE 612 by transmitting the message to an access network node 610 that will then transmit the message to the intended UE 612.Similarly, a core network node 108 may receive a particular message from a UE 612 by receiving the message from an access network node 610 that itself received the message from the UE 612.

[0090] In the depicted example, the core network 606 connects elements of the access network 604 (e.g., one or more of the network nodes 610) to one or more host computing systems, such as host 616. These connections may be direct or indirect via one or more intermediary networks or devices. In other examples, network nodes may be directly coupled to hosts. The core network 606 includes one or more core network nodes (e.g., core network node 608) of various types, one or more of which may be generally referred to as network nodes 608. Network nodes 608 are structured with hardware and software components. Features of these components may be substantially similar to those described with respect to the UEs, access network nodes, and / or hosts, such that the descriptions thereof are generally applicable to the corresponding components of the core network node 608. Example core network nodes provide functions of one or more of a Mobile Switching Center (MSC), Mobility Management Entity (MME), Home Subscriber Server (HSS), Access and Mobility Management Function (AMF), Session Management Function (SMF), Authentication Server Function (AUSF), Subscription Identifier De-concealing function (SIDE), Unified Data Management (UDM), Security Edge Protection Proxy (SEPP), Network Exposure Function (NEF), and / or a User Plane Function (UPF).

[0091] The host 616 may be under the ownership or control of a service provider other than an operator or provider of the access network 604 and / or the telecommunications network 602. The host 616 may be operated by the service provider or on behalf of the service provider. The host 616 may host a variety of applications to provide one or more services. Examples of such applications include live and pre-recorded audio / video content, data collection services such as retrieving and compiling data on various ambient conditions detected by a plurality of UEs, analytics functionality, social media, functions for controlling or otherwise interacting withremote devices, functions for an alarm and surveillance center, or any other such function performed by a server.

[0092] As a whole, the communication system 600 of Figure 6 enables connectivity between the UEs, network nodes, and hosts. In that sense, the communication system 600 may be configured to operate according to predefined rules or procedures, such as specific standards that include, but are not limited to: Global System for Mobile Communications (GSM); Universal Mobile Telecommunications System (UMTS); Long Term Evolution (LTE), and / or other suitable 2G, 3G, 4G, 5G standards, or any applicable future generation standard (e.g., 6G); wireless local area network (WLAN) standards, such as the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards (Wi-Fi); and / or any other appropriate wireless communication standard, such as the Worldwide Interoperability for Microwave Access (Wi-Max), Bluetooth, Z-Wave, Near Field Communication (NFC) ZigBee, Li-Fi, and / or any low-power wide-area network (LPWAN) standards such as LoRa and Sigfox. Moreover, the communication system 600 may be configured to support multiple different standards, protocols, or other rule sets, with individual components supporting all of the relevant rule sets or with different components or sub-systems within the communication system 600 supporting different standards, protocols, or rule sets.

[0093] As one example, in certain embodiments, access network 604 may contain some access network nodes 610 that support 3GPP radio access technologies (RAT), such as LTE or NR, while other access network nodes 610 support (or the same access network nodes 610 additionally support) non-3GPP RATs, such as Wi-Fi or a proprietary RAT. As another example, telecommunications network 602 may support multiple generations of related communication standards (e.g., 4G and 5G 3GPP communication standards) and, as a result, may include an access network 104 and / or a core network 106 that supports multiple different standard generations or may include multiple access networks 104 and / or multiple core networks 106 with individual networks 104, 106 supporting different standard generations.

[0094] Telecommunications network 602 may support network slicing to provide different logical networks to different devices that are connected to the telecommunications network 602. For example, the telecommunications network 602 may provide Ultra Reliable Low Latency Communication (URLLC) services to some UEs, while providing Enhanced Mobile Broadband (eMBB) services to other UEs, and / or Massive Machine Type Communication (mMTC) / Massive loT services to yet further UEs.

[0095] In some examples, one or more of the UEs 612 are configured to transmit and / or receive information without direct human interaction. For instance, a UE may be designed totransmit information to the access network 604 on a predetermined schedule, when triggered by an internal or external event, or in response to requests from the access network 604.Additionally, a UE may be configured for operating in single- or multi-RAT or multi-standard mode. For example, a UE may operate with any one or combination of Wi-Fi, NR (New Radio) and LTE, i.e. being configured for multi-radio dual connectivity (MR-DC), such as E-UTRAN (Evolved-UMTS Terrestrial Radio Access Network) New Radio - Dual Connectivity (EN-DC).

[0096] In the example, the hub 614 communicates with the access network 604 to facilitate indirect communication between one or more UEs (e.g., UE 612C and / or 612D) and network nodes (e.g., network node 610B). In some examples, the hub 614 may be a controller, router, content source and analytics, or any of the other communication devices described herein regarding UEs. For example, the hub 614 may be a broadband router enabling access to the core network 606 for the UEs. As another example, the hub 614 may be a controller that sends commands or instructions to one or more actuators in the UEs. Commands or instructions may be received from the UEs, network nodes 610, or by executable code, script, process, or other instructions in the hub 614.

[0097] As another example, the hub 614 may be a data collector that acts as temporary storage for UE data and, in some embodiments, may perform analysis or other processing of the data. As another example, the hub 614 may be a content source. For example, for a UE that is a VR headset, display, loudspeaker or other media delivery device, the hub 614 may retrieve VR assets, video, audio, or other media or data related to sensory information via a network node, which the hub 614 then provides to the UE either directly, after performing local processing, and / or after adding additional local content. In still another example, the hub 614 acts as a proxy server or orchestrator for the UEs, in particular if one or more of the UEs are low energy loT devices.

[0098] The hub 614 may have a constant / persistent or intermittent connection to the network node 610B. The hub 614 may also allow for a different communication scheme and / or schedule between the hub 614 and UEs (e.g., UE 612C and / or 612D), and between the hub 614 and the core network 606. In other examples, the hub 614 is connected to the core network 606 and / or one or more UEs via a wired connection. Moreover, the hub 614 may be configured to connect to an M2M service provider over the access network 604 and / or to another UE over a direct connection. In some scenarios, UEs may establish a wireless connection with the network nodes 610 while still connected via the hub 614 via a wired or wireless connection. In some embodiments, the hub 614 may be a dedicated hub - that is, a hub whose primary function is to route communications to / from the UEs from / to the network node 610B. In other embodiments,the hub 614 may be a non-dedicat ed hub - that is, a device which is capable of operating to route communications between the UEs and network node 61 OB, but which is additionally capable of operating as a communication start and / or end point for certain data channels.

[0099] Figure 7 is another example of a communication system 700 according to some embodiments. As used herein, the communication system 700 includes multiple access points (APs) 710 (with four exemplary APs 710A, 710B, 710C, and 710D being depicted) and multiple wireless devices, referred to in the context of communication system 700 as stations (STAs) 712 (referred to individually as STA 712A, STA 712B, STA 712C, STA 712D, and STA 712E). STA 712A is served by AP 710A in a first basic service set (BSS) 720A. STA 710B and STA 710C are served by AP 710B in a second BSS, BSS 720B. STA 712D is served by AP 710C in a third BSS, BSS 720C. STA 712E is served by AP 710D in a fourth BSS, BSS 720D. Stations 712 may be non-AP STAs and correspond to various kinds of wireless devices, for example, user terminals, such as mobile or stationary computing devices like smartphones, laptop computers, desktop computers, tablet computers, gaming devices, head-mounted displays (HMDs) for Augmented Reality (AR) or Virtual Reality (VR), or the like. Further, stations 712 could, for example, correspond to other kinds of equipment like smart home devices, printers, multimedia devices, data storage devices, or the like.

[0100] Each of STAs 712 may connect through a radio link to one of APs 710. For example, depending on location or channel conditions experienced by a given STA 712, the STA may select an appropriate AP and BSS for establishing the radio link. The radio link may be based on one or more orthogonal frequency-division multiplexing (OFDM) carriers from a frequency spectrum that is shared on the basis of a contention-based mechanism, e.g., an unlicensed or license exempt band like 2.4 GHz Industrial, Scientific, and Medical (ISM) band, the 5 GHz band, the 6 GHz band, or the 60 GHz band.

[0101] Each AP 710 may provide data connectivity to STAs 712 connected to a particular AP 710. As illustrated, APs 710 may be connected to a data network 730. In this way, APs 710 may also provide data connectivity between STAs 712 and other entities, e.g., to one or more servers, service providers, data sources, data sinks, user terminals, or the like. Accordingly, the radio link established between a given STA 712 and its serving AP 710 may be used for providing various kinds of services to STA 712, e.g., a voice service, a multimedia service, or other data service. Such services may be based on applications that are executed on STA 712 and / or on a device linked to STA 712. By way of example, Figure 7 illustrates an application service platform 732 provided in data network 730. The application(s) executed on STA 712 and / or on one or more other devices linked to STA 712 may use the radio link for datacommunication with one or more other STA 712 and / or the application service platform 732, thereby enabling utilization of the corresponding service(s) at STA 712.

[0102] Figure 8 shows a wireless device 800, which may be configured to operate in communication system 600 of Figure 6 or in communication system 700 of Figure 7. The wireless device 800 may be alternatively referred to as a UE 800, like a UE 612 within the context of communication system 600, or as a station (STA) 800 or as a non-access-point station (non-AP STA) 800, like a STA 712 within the context of the communication system 700, in accordance with respective embodiments. As used herein, a wireless device refers to a device capable, configured, arranged and / or operable to communicate wirelessly with network nodes and / or other wireless devices. Examples of a wireless device include, but are not limited to, a smart phone, mobile phone, cell phone, voice over IP (VoIP) phone, wireless local loop phone, desktop computer, personal digital assistant (PDA), wireless cameras, gaming console or device, music storage device, playback appliance, wearable terminal device, wireless endpoint, mobile station, tablet, laptop, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), smart device, wireless customer-premise equipment (CPE), vehicle, vehicle-mounted or vehicle embedded / integrated wireless device, and wireless terminal. Other examples include any type of UE identified by the 3rd Generation Partnership Project (3GPP), including a narrow band internet of things (NB-IoT) UE, a machine type communication (MTC) UE, and / or an enhanced MTC (eMTC) UE.

[0103] A wireless device 800 may support device-to-device (D2D) communication, for example by implementing a 3GPP standard for sidelink communication, Dedicated Short-Range Communication (DSRC), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), or vehicle-to-everything (V2X). In other examples, wireless device 800 may not necessarily have a user in the sense of a human user who owns and / or operates the relevant device. Instead, wireless device 800 may represent a device that is intended for sale to, or operation by, a human user but which may not, or which may not initially, be associated with a specific human user (e.g., a smart sprinkler controller). Alternatively, wireless device 800 may represent a device that is not intended for sale to, or operation by, an end user but which may be associated with or operated for the benefit of a user (e.g., a smart power meter).

[0104] In particular embodiments, wireless device 800 includes processing circuitry 802 that is operatively coupled via a bus 804 to an input / output interface 806, a power source 808, a memory 810, a communication interface 812, and / or any other component, or any combination thereof. Certain embodiments of wireless device 800 may include all or a subset of the components shown in Figure 8. The level of integration between the components may vary fromone embodiment of wireless device 800 to another. In general, in a particular embodiment of wireless device 800, processing circuitry 802, input / output interface 806, power source 808, memory 810, and communication interface 812 may, in whole or in part, represent or include physical components common to or shared by one or more of the other elements of wireless device 800. Further, certain embodiments of wireless devices 800 may contain multiple instances of a component, such as multiple processors, memories, transceivers, transmitters, receivers, etc.

[0105] The processing circuitry 802 is configured to process instructions and data and may be configured to implement any sequential state machine operative to execute instructions stored as machine-readable computer programs in the memory 810. The processing circuitry 802 may be implemented as one or more hardware-implemented state machines (e.g., in discrete logic, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), etc.); programmable logic together with appropriate firmware; one or more stored computer programs, general-purpose processors, such as a microprocessor or digital signal processor (DSP), together with appropriate software; or any combination of the above. For example, the processing circuitry 802 may include multiple central processing units (CPUs).

[0106] In the example, the input / output interface 806 may be configured to provide an interface or interfaces to an input device, output device, or one or more input and / or output devices. Examples of an output device include a speaker, a sound card, a video card, a display, a monitor, a printer, an actuator, an emitter, a smartcard, another output device, or any combination thereof. An input device may allow a user to capture information into wireless device 800. Examples of an input device include a touch-sensitive or presence-sensitive display, a camera (e.g., a digital camera, a digital video camera, a web camera, etc.), a microphone, a sensor, a mouse, a trackball, a directional pad, a trackpad, a scroll wheel, a smartcard, and the like. The presence-sensitive display may include a capacitive or resistive touch sensor to sense input from a user. A sensor may be, for instance, an accelerometer, a gyroscope, a tilt sensor, a force sensor, a magnetometer, an optical sensor, a proximity sensor, a biometric sensor, etc., or any combination thereof. An output device may use the same type of interface port as an input device. For example, a Universal Serial Bus (USB) port may be used to provide an input device and an output device.

[0107] In some embodiments, the power source 808 is structured as a battery or battery pack. Other types of power sources, such as an external power source (e.g., an electricity outlet), photovoltaic device, or power cell, may be used to supply power to circuitry or to charge an associated battery. The power source 808 may further include power circuitry for delivering power from the power source 808 itself, and / or an external power source, to the various parts ofwireless device 800 via input circuitry or an interface such as an electrical power cable. Power source 808 may perform any formatting, converting, or other modification to make accessible power suitable for the respective components of the wireless device 800 to which power is supplied.

[0108] The memory 810 may be or be configured to include memory such as random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable readonly memory (EEPROM), magnetic disks, optical disks, hard disks, removable cartridges, flash drives, and so forth. In one example, the memory 810 includes one or more programs 814, such as an operating system, web browser application, a widget, gadget engine, or other application, and corresponding data 816. The memory 810 may store, for use by wireless device 800, any of a variety of various operating systems or combinations of operating systems.

[0109] The memory 810 may be configured to include a number of physical drive units, such as redundant array of independent disks (RAID), flash memory, USB flash drive, external hard disk drive, thumb drive, pen drive, key drive, high-density digital versatile disc (HD-DVD) optical disc drive, internal hard disk drive, Blu-Ray optical disc drive, holographic digital data storage (HDDS) optical disc drive, external mini-dual in-line memory module (DIMM), synchronous dynamic random access memory (SDRAM), external micro-DIMM SDRAM, smartcard memory such as tamper resistant module in the form of a universal integrated circuit card (UICC) including one or more subscriber identity modules (SIMs), such as a USIM and / or ISIM, other memory, or any combination thereof. The UICC may for example be an embedded UICC (eUICC), integrated UICC (iUICC) or a removable UICC commonly known as ‘SIM card.’ The memory 810 may allow wireless device 800 to access instructions, programs, and the like, stored on transitory or non-transitory memory media, to off-load data, or to upload data. An article of manufacture, such as one utilizing a communication system may be tangibly embodied as or in the memory 810, which may be or comprise a device-readable storage medium.

[0110] The processing circuitry 802 may be configured to communicate with an access network or other network via or using the communication interface 812. The communication interface 812 may comprise one or more communication subsystems and may include or be communicatively coupled to an antenna 822. The communication interface 812 may include one or more transceivers used to communicate, such as by communicating with one or more remote transceivers of another device capable of wireless communication (e.g., another wireless device or a network node in an access network). Each transceiver may include a transmitter 818 and / or a receiver 820 appropriate to provide network communications (e.g., optical, electrical, frequencyallocations, and so forth). Moreover, the transmitter 818 and receiver 820 may be coupled to one or more antennas (e.g., antenna 822) and may share circuit components, software, or firmware, or alternatively be implemented separately.

[0111] In the illustrated embodiment, communication functions of the communication interface 812 may include cellular communication, Wi-Fi communication (e.g., according to an IEEE 802.11 family standard), LPWAN communication, data communication, voice communication, multimedia communication, short-range communications such as Bluetooth, near-field communication, location-based communication such as the use of the global positioning system (GPS) to determine a location, another like communication function, or any combination thereof. Communications may be implemented according to one or more communication protocols and / or standards, such as IEEE 802.11, Code Division Multiplexing Access (CDMA), Wideband Code Division Multiple Access (WCDMA), GSM, LTE, New Radio (NR), UMTS, WiMax, Ethernet, transmission control protocol / internet protocol (TCP / IP), synchronous optical networking (SONET), Asynchronous Transfer Mode (ATM), QUIC, Hypertext Transfer Protocol (HTTP), and so forth.

[0112] In particular embodiments, wireless device 800 may provide an output of data captured via a sensor, through its communication interface 812, via a wireless connection to a network node, and / or in any appropriate manner. Data captured by sensors of a wireless device 800 can be communicated through a wireless connection to a network node via another wireless device 800. In particular embodiments, such output may be periodic (e.g., once every 15 minutes if it reports the sensed temperature), random (e.g., to even out the load from reporting from several sensors), in response to a triggering event (e.g., when moisture is detected an alert is sent), in response to a request (e.g., a user initiated request), or a continuous stream (e.g., a live video feed of a patient).

[0113] As another example, wireless device 800 comprises an actuator, a motor, or a switch, related to a communication interface configured to receive wireless input from a network node via a wireless connection. In response to the received wireless input the states of the actuator, the motor, or the switch may change. For example, wireless device 800 may comprise a motor that adjusts the control surfaces or rotors of a drone in flight according to the received input or to a robotic arm performing a medical procedure according to the received input.

[0114] Wireless device 800, when in the form of an Internet of Things (loT) device, may be a device for use in one or more application domains, these domains comprising, but not limited to, wearable technology, extended industrial application and healthcare. Non-limiting examples of such an loT device are a device which is or which is embedded in: a connected refrigerator orfreezer, a TV, a connected lighting device, an electricity meter, a robot vacuum cleaner, a voice controlled smart speaker, a home security camera, a motion detector, a thermostat, a smoke detector, a door / window sensor, a flood / moisture sensor, an electrical door lock, a connected doorbell, an air conditioning system like a heat pump, an autonomous vehicle, a surveillance system, a weather monitoring device, a vehicle parking monitoring device, an electric vehicle charging station, a smart watch, a fitness tracker, a wearable for tactile augmentation or sensory enhancement, a water sprinkler, an animal- or item-tracking device, a sensor for monitoring a plant or animal, an industrial robot, an Unmanned Aerial Vehicle (UAV), and any kind of medical device, like a heart rate monitor or a remote controlled surgical robot. In particular embodiments, wireless device 800 represents an loT device that comprises circuitry and / or software in dependence of the intended application of the loT device in addition to other components as described in relation to the example embodiment of wireless device 800 shown in Figure 8.

[0115] As yet another specific example, in an loT scenario, wireless device 800 may represent a machine or other device that performs monitoring and / or measurements, and transmits the results of such monitoring and / or measurements to another wireless device and / or a network node. Wireless device 800 may in this case be an M2M device, which may in a 3GPP context be referred to as an MTC device. As one particular example, wireless device 800 may implement the 3GPP NB-IoT standard. In other scenarios, wireless device 800 may represent a vehicle, such as a car, a bus, a truck, a ship and an airplane, or other equipment that is capable of monitoring and / or reporting on its operational status or other functions associated with its operation.

[0116] In practice, any number of wireless devices 800 may be used together with respect to a single use case. For example, a first wireless device 800 might be or be integrated in a drone and provide the drone’s speed information (obtained through a speed sensor) to a second wireless device 800 that is a remote controller operating the drone. When a user makes changes from the remote controller, the first wireless device 800 may adjust the throttle on the drone (e.g., by controlling an actuator) to increase or decrease the drone’s speed. The first and / or the second wireless device 800 can also include more than one of the functionalities described above. For example, wireless device 800 might comprise the sensor and the actuator, and handle communication of data for both the speed sensor and the actuators.

[0117] Figure 9 shows a network node 900 in accordance with some embodiments. As used herein, network node refers to equipment capable, configured, arranged and / or operable to communicate directly or indirectly with a UE and / or with other network nodes or equipment, in atelecommunications network. In accordance with respective embodiments, network node 900 may be configured to operate in communication system 600 of Figure 6, like network nodes 608 or 610, or in communication system 700 of Figure 7, like an AP 710 or a station 712. Examples of network nodes include, but are not limited to, access points (APs) (e.g., radio access points), base stations (BSs) (e.g., radio base stations, Node Bs, evolved Node Bs (eNBs) and NR NodeBs (gNBs)), O-RAN nodes or components of an O-RAN node (e.g., O-RU, O-DU, O-CU).

[0118] Network nodes 900 may be categorized based on the amount of coverage they provide (or, stated differently, their transmit power level) and so, depending on the provided amount of coverage, may be referred to as femto base stations, pico base stations, micro base stations, or macro base stations. Network node 900 may be a relay node or a relay donor node controlling a relay. Network nodes 900 may also include one or more (or all) parts of a distributed radio base station such as centralized digital units, distributed units (e.g., in an O-RAN access node) and / or remote radio units (RRUs), sometimes referred to as Remote Radio Heads (RRHs). Such remote radio units may or may not be integrated with an antenna as an antenna integrated radio. Parts of a distributed radio base station may also be referred to as nodes in a distributed antenna system (DAS).

[0119] Other examples of network nodes 900 include multiple transmission point (multi-TRP) 5G access nodes, multi-standard radio (MSR) equipment such as MSR BSs, network controllers such as radio network controllers (RNCs) or base station controllers (BSCs), base transceiver stations (BTSs), transmission points, transmission nodes, multi-cell / multicast coordination entities (MCEs), Operation and Maintenance (O&M) nodes, Operations Support System (OSS) nodes, Self-Organizing Network (SON) nodes, positioning nodes (e.g., Evolved Serving Mobile Location Centers (E-SMLCs)), and / or Minimization of Drive Tests (MDTs).

[0120] In particular embodiments, network node 900 includes a processing circuitry 902, a memory 904, a communication interface 906, and a power source 908. In general, in a particular embodiment of network node 900, processing circuitry 902, memory 904, communication interface 906, and power source 908 may, in whole or in part, represent or include physical components common to or shared by one or more of the other elements of network node 900.

[0121] The network node 900 may be composed of multiple distinct network entities (e.g., a NodeB entity and a RNC entity, or a BTS entity and a BSC entity, etc.), which may each have or utilize their own respective physical components. In certain scenarios in which the network node 900 comprises multiple such entities (e.g., BTS and BSC), one or more of the separate entities may be shared among several network nodes. For example, a single RNC may control multiple NodeBs. In such a scenario, each unique NodeB and RNC pair may, in some instances, beconsidered a single separate network node. In some embodiments, the network node 900 may be configured to support multiple radio access technologies (RATs). In such embodiments, some components may be duplicated (e.g., separate memories 904 or portions of memory 904 for different RATs) and some components may be reused (e.g., a same antenna 910 may be shared by different RATs). The network node 900 may also include multiple sets of the various illustrated components for different wireless technologies integrated into network node 900, for example GSM, WCDMA, LTE, NR, Wi-Fi (e.g., according to an IEEE 802.11 family standard), Zigbee, Z-wave, LoRaWAN, Radio Frequency Identification (RFID) or Bluetooth wireless technologies. These wireless technologies may be integrated into the same or different chip or set of chips and other components within network node 900.

[0122] The processing circuitry 902 may comprise a combination of one or more of a microprocessor, controller, microcontroller, central processing unit, digital signal processor, application- specific integrated circuit, field programmable gate array, or any other suitable computing device, resource, or combination of hardware, software and / or encoded logic operable to provide, either alone or in conjunction with other components, such as the memory 904, to provide network node 900 functionality.

[0123] In some embodiments, the processing circuitry 902 includes a system on a chip (SOC). In some embodiments, the processing circuitry 902 includes one or more of radio frequency (RF) transceiver circuitry 912 and baseband processing circuitry 914. In some embodiments, the RF transceiver circuitry 912 and the baseband processing circuitry 914 may be on separate chips (or sets of chips), boards, or units, such as radio units and digital units. In alternative embodiments, part or all of RF transceiver circuitry 912 and baseband processing circuitry 914 may be on the same chip or set of chips, boards, or units.

[0124] The memory 904 may comprise any form of volatile or non-volatile computer-readable memory including, without limitation, persistent storage, solid-state memory, remotely mounted memory, magnetic media, optical media, random access memory (RAM), read-only memory (ROM), mass storage media (for example, a hard disk), removable storage media (for example, a flash drive, a Compact Disk (CD) or a Digital Video Disk (DVD)), and / or any other volatile or non-volatile, non-transitory device-readable and / or computer-executable memory devices that store information, data, and / or instructions that may be used by the processing circuitry 902. The memory 904 may store any suitable instructions, data, or information, including a computer program, software, an application including one or more of logic, rules, code, tables, and / or other instructions capable of being executed by the processing circuitry 902 and utilized by the network node 900. The memory 904 may be used to store any calculationsmade by the processing circuitry 902 and / or any data received via the communication interface 906. In some embodiments, the processing circuitry 902 and memory 904 is integrated.

[0125] The communication interface 906 is used in wired or wireless communication of signaling and / or data with UEs, other network nodes, and / or any other network equipment. In the illustrated embodiment, communication interface 906 comprises port(s) / terminal(s) 916 to send and receive data, for example to and from a network over a wired connection. In particular embodiments, network node 800 may be capable of wireless communication and communication interface 906 may also include radio front-end circuitry 918 that may be coupled to, or in certain embodiments a part of, an antenna 910. Particular embodiments of radio front-end circuitry 918 include filter(s) 920 and amplifier (s) 922. The radio front-end circuitry 918 may be connected to an antenna 910 and processing circuitry 902. The radio front-end circuitry may be configured to condition signals communicated between antenna 910 and processing circuitry 902. The radio front-end circuitry 918 may receive digital data that is to be sent out to other network nodes or UEs via a wireless connection. The radio front-end circuitry 918 may convert the digital data into a radio signal(s) having the appropriate channel and bandwidth parameters using a combination of filters 920 and / or amplifiers 922. The radio signal(s) may then be transmitted via the antenna 910. Similarly, when receiving data, the antenna 910 may collect radio signals which are then converted into digital data by the radio front-end circuitry 918. The digital data may be passed to the processing circuitry 902. In other embodiments, the communication interface may comprise different components and / or different combinations of components.

[0126] In certain alternative embodiments, network node 900 may be capable of wireless communication but does not include separate radio front-end circuitry 918, instead, the processing circuitry 902 includes radio front-end circuitry and is connected to the antenna 910. Similarly, in some embodiments, all or some of the RF transceiver circuitry 912 is part of the communication interface 906. In still other embodiments, the communication interface 906 includes one or more ports or terminals 916, the radio front-end circuitry 918, and the RF transceiver circuitry 912, as part of a radio unit (not shown), and the communication interface 906 communicates with the baseband processing circuitry 914, which is part of a digital unit (not shown).

[0127] The antenna 910 may include one or more antennas, or antenna arrays, configured to send and / or receive wireless signals. The antenna 910 may be coupled to the radio front-end circuitry 918 and may be any type of antenna capable of transmitting and receiving data and / or signals wirelessly. In certain embodiments, the antenna 910 is separate from the network node 900 and connectable to the network node 900 through one or more interfaces or ports.

[0128] The antenna 910, communication interface 906, and / or the processing circuitry 902 may be configured to perform some or all of the receiving operations and / or obtaining operations described herein as being performed by the network node 900. Any information, data, and / or signals may be received from a UE, another network node, and / or any other network equipment. Similarly, the antenna 910, the communication interface 906, and / or the processing circuitry 902 may be configured to perform some or all of the transmitting or sending operations described herein as being performed by the network node 900. Any information, data and / or signals may be transmitted to a UE, another network node, and / or any other network equipment.

[0129] The power source 908 provides power to the various components of network node 900 in a form suitable for the respective components (e.g., at a voltage and current level needed for each respective component). The power source 908 may further comprise, or be coupled to, power management circuitry to supply the components of the network node 900 with power for performing the functionality described herein. For example, the network node 900 may be connectable to an external power source (e.g., the power grid, an electricity outlet) via an input circuitry or interface such as an electrical cable, whereby the external power source supplies power to power circuitry of the power source 908. As a further example, the power source 908 may comprise a source of power in the form of a battery or battery pack which is connected to, or integrated in, power circuitry. The battery may provide backup power should the external power source fail.

[0130] Embodiments of the network node 900 may include additional components beyond those shown in Figure 9 for providing certain aspects of the network node’s functionality, including any of the functionality described herein and / or any functionality necessary to support the subject matter described herein. For example, the network node 900 may include user interface equipment to allow input of information into the network node 900 and to allow output of information from the network node 900. This may allow a user to perform diagnostic, maintenance, repair, and other administrative functions for the network node 900.

[0131] Figure 10 is a block diagram illustrating a virtualization environment 1000 in which functions implemented by some embodiments may be virtualized. In the present context, virtualizing means creating virtual versions of apparatuses or devices which may include virtualizing hardware platforms, storage devices and networking resources. As used herein, virtualization can be applied to any device described herein, or components thereof, and relates to an implementation in which at least a portion of the functionality is implemented as one or more virtual components. Some or all of the functions described herein may be implemented as virtual components executed by one or more virtual machines (VMs) implemented in one ormore virtual environments 1000 hosted by one or more of hardware nodes, such as a hardware computing device that operates as an access network node, UE, core network node, or host. Further, in embodiments in which a virtual node does not require radio connectivity (e.g., a core network node or host), then the node may be entirely virtualized. In some embodiments, the virtualization environment 1000 includes components defined by the O-RAN Alliance, such as an O-Cloud environment orchestrated by a Service Management and Orchestration Framework via an O-2 interface.

[0132] Applications 1002 (which may alternatively be called software instances, virtual appliances, network functions, virtual nodes, virtual network functions, etc.) are run in the virtualization environment 900 to implement some of the features, functions, and / or benefits of some of the embodiments disclosed herein.

[0133] Hardware 1004 includes processing circuitry, memory that stores software and / or instructions executable by hardware processing circuitry, and / or other hardware devices as described herein, such as a network interface, input / output interface, and so forth. Software may be executed by the processing circuitry to instantiate one or more virtualization layers 1006 (also referred to as hypervisors or virtual machine monitors (VMMs)), provide VM 1008A and VM 1008B (which may be collectively referred to as VMs 1008), and / or perform any of the functions, features and / or benefits described in relation with some embodiments described herein. The virtualization layer 1006 may present a virtual operating platform that appears like networking hardware to one or more of the VMs 1008.

[0134] The VMs 1008 comprise virtual processing, virtual memory, virtual networking or interface and virtual storage, and may be run by virtualization layer 1006. Different embodiments of the instance of a virtual appliance 1002 may be implemented on one or more of VMs 1008, and the implementations may be made in different ways. Virtualization of the hardware is in some contexts referred to as network function virtualization (NFV). NFV may be used to consolidate many network equipment types onto industry standard high volume server hardware, physical switches, and physical storage, which can be located in data centers, and customer premise equipment.

[0135] In the context of NFV, each of the VMs 1008 may be a software implementation of a physical machine that runs programs as if they were executing on a physical, non-virtualized machine. Each of the VMs 1008, and that part of hardware 1004 that executes that VM, be it hardware dedicated to that VM and / or hardware shared by that VM with others of the VMs, forms separate virtual network elements. Still in the context of NFV, a virtual network functionis responsible for handling specific network functions that run in one or more of the VMs 1008 on top of the hardware 1004 and corresponds to an application 1002.

[0136] Hardware 1004 may be implemented in a standalone network node with generic or specific components. Hardware 1004 may implement some functions via virtualization.Alternatively, hardware 1004 may be part of a larger cluster of hardware (e.g., such as in a data center or CPE) where many hardware nodes work together and are managed via management and orchestration 1010, which, among others, oversees lifecycle management of applications 1002. In some embodiments, hardware 1004 is coupled to one or more radio units that each include one or more transmitters and one or more receivers that may be coupled to one or more antennas. Radio units may communicate directly with other hardware nodes via one or more appropriate network interfaces and may be used in combination with the virtual components to provide a virtual node with radio capabilities, such as a radio access node or a base station. In some embodiments, some signaling can be provided with the use of a control system 1012 which may alternatively be used for communication between hardware nodes and radio units.

[0137] Although the computing devices described herein (e.g., UEs, network nodes, hosts) may include the illustrated combination of hardware components, other embodiments may comprise computing devices with different combinations of components. It is to be understood that these computing devices may comprise any suitable combination of hardware and / or software needed to perform the tasks, features, functions, and methods disclosed herein.Determining, calculating, obtaining or similar operations described herein may be performed by processing circuitry, which may process information by, for example, converting the obtained information into other information, comparing the obtained information or converted information to information stored in the network node, and / or performing one or more operations based on the obtained information or converted information, and as a result of said processing making a determination. Moreover, while components are depicted as single boxes located within a larger box, or nested within multiple boxes, in practice, computing devices may comprise multiple different physical components that make up a single illustrated component, and functionality may be partitioned between separate components. For example, a communication interface may be configured to include any of the components described herein, and / or the functionality of the components may be partitioned between the processing circuitry and the communication interface. In another example, non-computationally intensive functions of any of such components may be implemented in software or firmware and computationally intensive functions may be implemented in hardware.

[0138] In certain embodiments, some or all of the functionality described herein may be provided by processing circuitry executing instructions stored on in memory, which in certain embodiments may be a computer program product in the form of a non-transitory computer-readable storage medium. In alternative embodiments, some or all of the functionality may be provided by the processing circuitry without executing instructions stored on a separate or discrete device-readable storage medium, such as in a hard-wired manner. In any of those particular embodiments, whether executing instructions stored on a non-transitory computer-readable storage medium or not, the processing circuitry can be configured to perform the described functionality. The benefits provided by such functionality are not limited to the processing circuitry alone or to other components of the computing device, but are enjoyed by the computing device as a whole, and / or by end users and a wireless network generally.

[0139] Those skilled in the art will recognize improvements and modifications to the embodiments of the present disclosure. All such improvements and modifications are considered within the scope of the concepts disclosed herein.

[0140] The present disclosure may include one or more embodiments, including the following embodiments:

[0141] Embodiment 1 : A method performed by a wireless device (800) for performing Channel State Information, CSI, measurement and reporting, the method comprising receiving (402), from a network node (900), a configuration of one or more periodic Non-Zero Power, NZP, CSI Reference Signals, CSI-RS, resources; receiving (404), from the network node (900), a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following: an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure; an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources. The method may also include performing (406) channel measurements according to the first signal; receiving (408), from the network node (900), a second signal that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal, where the second signal is different than the first signal; computing (412) the one or more CSI reports in response to receiving the second signal based on the channel measurements; and reporting (414) the one or more CSI reports to the network node (900).

[0142] Embodiment 2: The method of embodiment 1, wherein the computation of the one or more CSI reports commences when the second signal is received.

[0143] Embodiment 3: The method of any of embodiments 1 to 2, wherein the second signal additionally comprises information about uplink, UL, resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities.

[0144] Embodiment 4: The method of any of embodiments 1 to 2, further comprising: receiving (410) a third signal that comprises information about uplink resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities, wherein the third signal is different than the first signal and the second signal.

[0145] Embodiment 5: The method of any of embodiments 1 to 4, wherein the first signal is a CSI measurement start trigger that is at least one of a downlink related downlink control information, DCI, or a downlink Medium Access Control, MAC, Control Element, CE.

[0146] Embodiment 6: The method of any of embodiments 1 to 5, wherein the second signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

[0147] Embodiment 7: The method of any of embodiments 1 to 5, wherein the second signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

[0148] Embodiment 8: The method of any of embodiments 1 to 5, wherein the second signal is a CSI reporting trigger.

[0149] Embodiment 9: The method of any of embodiments 6 to 8, wherein the one or more CSI reports are reported using the UL resources provided in the second signal.

[0150] Embodiment 10: The method of embodiment 4, wherein the third signal is an uplink Physical Uplink Shared Channel, PUSCH, grant.

[0151] Embodiment IL A wireless device (800) is provided for performing Channel State Information, CSI, measurement and reporting, the wireless device (800) comprising processing circuitry and a memory, the processing circuitry configured to perform any of embodiments 1 to 10.

[0152] Embodiment 12: A method performed by a network node (900) for facilitating Channel State Information, CSI, measurement and reporting, the method comprising: providing (402), to a wireless device (800), a configuration of one or more periodic Non-Zero Power, NZP, CSI Reference Signals, CSI-RS, resources; providing (404), to the wireless device (900), a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSLRS resources, wherein the first signal comprises information on one or more of the following: an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure; an indication thataveraging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; and a number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources. The method may also include providing (408), to the wireless device (800), a second signal that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal, where the second signal is different than the first signal; and receiving (414), the one or more CSI reports from the wireless device (800).

[0153] Embodiment 13: The method of embodiment 12, wherein the computation of the one or more CSI reports commences when the second signal is received.

[0154] Embodiment 14: The method of any of embodiments 12 to 13, wherein the second signal additionally comprises information about uplink resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities.

[0155] Embodiment 15: The method of any of embodiments 12 to 13, further comprising: providing (410) a third signal that comprises information about uplink, UL, resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities, wherein the third signal is different than the first signal and the second signal.

[0156] Embodiment 16: The method of any of embodiments 12 to 15, wherein the first signal is a CSI measurement start trigger that is at least one of a downlink related downlink control information, DCI, or a downlink Medium Access Control, MAC, Control Element, CE.

[0157] Embodiment 17: The method of any of embodiments 12 to 16, wherein the second signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

[0158] Embodiment 18: The method of any of embodiments 12 to 16, wherein the second signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

[0159] Embodiment 19: The method of any of embodiments 12 to 16, wherein the second signal is a CSI reporting trigger.

[0160] Embodiment 20: The method of any of embodiments 17 to 19, wherein the one or more CSI reports are reported using the UL resources provided in the second signal.

[0161] Embodiment 21: The method of embodiment 15, wherein the third signal is an uplink Physical Uplink Shared Channel, PUSCH, grant.

[0162] Embodiment 22: A network node (900) is provided for facilitating Channel State Information, CSI, measurement and reporting, the network node (900) comprising processing circuitry and a memory, the processing circuitry configured to perform any of embodiments 12 to 21.

Claims

CLAIMS1. A method performed by a wireless device (800) for performing Channel State Information, CSI, measurement and reporting, the method comprising one or more of:receiving (402), from a network node (900), a configuration of one or more periodic Non-Zero Power, NZP, CSI Reference Signals, CSLRS, resources;receiving (404), from the network node (900), a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following:an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure;an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; anda number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources;performing (406) channel measurements according to the first signal;receiving (408), from the network node (900), a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal;computing (412) the one or more CSI reports in response to receiving the second signal based on the channel measurements; andreporting (414) the one or more CSI reports to the network node (900).

2. The method of claim 1, wherein the computation of the one or more CSI reports commences when the second signal is received.

3. The method of any of claims 1 to 2, wherein the second signal additionally comprises information about uplink, UL, resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities.

4. The method of any of claims 1 to 2, further comprising:receiving (410) a third signal that comprises information about uplink resources forcarrying the one or more CSI reports comprising one or more CSI reporting quantities, wherein the third signal is different than the first signal and the second signal.

5. The method of any of claims 1 to 4, wherein the first signal is a CSI measurement start trigger that is at least one of a downlink related downlink control information, DCI, or a downlink Medium Access Control, MAC, Control Element, CE.

6. The method of any of claims 1 to 3 and 5, wherein the second signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

7. The method of any of claims 1 to 3 and 5, wherein the second signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

8. The method of any of claims 1 to 3 and 5-7, wherein the second signal is a CSI reporting trigger.

9. The method of any of claims 1 to 2 and 4 to 5, wherein the third signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

10. The method of any of claims 1 to 2 and 4 to 5, wherein the third signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

11. The method of any of claims 1 to 2, 4 to 5, and 9 to 10, wherein the third signal is a CSI reporting trigger.

12. A wireless device (800) is provided for performing Channel State Information, CSI, measurement and reporting, the wireless device (800) comprising processing circuitry and a memory, the processing circuitry configured to perform one or more of:receive (402), from a network node (900), a configuration of one or more periodic NonZero Power, NZP, CSI Reference Signals, CSI-RS, resources;receive (404), from the network node (900), a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following:an identity of the subset of the one or more periodic NZP CSI-RS resources;a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure;an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; anda number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources;perform (406) channel measurements according to the first signal;receive (408), from the network node (900), a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal;compute (412) the one or more CSI reports in response to receiving the second signal based on the channel measurements; andreport (414) the one or more CSI reports to the network node (900).

13. The wireless device (800) of claim 12, wherein the processing circuitry is further configured to perform the methods of any of claims 2 to 11.

14. A method performed by a network node (900) for facilitating Channel State Information, CSI, measurement and reporting, the method comprising one or more of:providing (402), to a wireless device (800), a configuration of one or more periodic NonZero Power, NZP, CSI Reference Signals, CSI-RS, resources;providing (404), to the wireless device (900), a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following:an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure;an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; anda number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources;providing (408), to the wireless device (800), a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a timelimit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal; andreceiving (414), the one or more CSI reports from the wireless device (800).

15. The method of claim 14, wherein the computation of the one or more CSI reports commences when the second signal is received.

16. The method of any of claims 14 to 15, wherein the second signal additionally comprises information about uplink resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities.

17. The method of any of claims 14 to 15, further comprising:providing (410) a third signal that comprises information about uplink, UL, resources for carrying the one or more CSI reports comprising one or more CSI reporting quantities, wherein the third signal is different than the first signal and the second signal.

18. The method of any of claims 14 to 17, wherein the first signal is a CSI measurement start trigger that is at least one of a downlink related downlink control information, DCI, or a downlink Medium Access Control, MAC, Control Element, CE.

19. The method of any of claims 14 to 16, and 18, wherein the second signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

20. The method of any of claims 14 to 16, and 18, wherein the second signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

21. The method of any of claims 14 to 16 and 18 to 20, wherein the second signal is a CSI reporting trigger.

22. The method of any of claims 14 to 15 and 17 to 18, wherein the third signal is an uplink related DCI providing UL resources for carrying the one or more CSI reports.

23. The method of any of claims 14 to 15 and 17 to 18, wherein the third signal is a MAC CE that provides UL resources for carrying the one or more CSI reports.

24. The method of any of claims 14 to 15, 17 to 18, and 22 to 23, wherein the third signal is a CSI reporting trigger.

25. A network node (900) is provided for facilitating Channel State Information, CSI, measurement and reporting, the network node (900) comprising processing circuitry and a memory, the processing circuitry configured to perform one or more of:provide (402), to a wireless device (800), a configuration of one or more periodic NonZero Power, NZP, CSI Reference Signals, CSI-RS, resources;provide (404), to the wireless device (900), a first signal that indicates to start measurement on a subset of the one or more periodic NZP CSI-RS resources, wherein the first signal comprises information on one or more of the following:an identity of the subset of the one or more periodic NZP CSI-RS resources; a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources to measure;an indication that averaging across a number of CSI-RS occasions of the one or more periodic NZP CSI-RS resources is enabled or disabled; anda number of CSI-RS ports to measure in the subset of the one or more periodic NZP CSI-RS resources;provide (408), to the wireless device (800), a second signal that is different than the first signal, wherein the second signal comprises information on information that indicates a time limit for computing one or more CSI reports comprising the measurements obtained by the information in the first signal; andreceive (414), the one or more CSI reports from the wireless device (800).

26. The network node (900) of claim 25, wherein the processing circuitry is configured to perform any of the methods of claims 15 to 24.

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